Packless turbine pump shaft



April 25, 1933. s COATS PACKLESS TURBINE PUMP SHAFT Filed April- 21, 1951 INVENTOR.

GEO/26E 5. Con 75'. BY

A TTORNEYS.

Patented Apr. 25, 1933 UNITED STATES enonen s. ooArEs, OF vIsALIAfcAtIFonnIa PACKLESS TURBINE PUMP snare Application filed April 21,

My invention relates to improvements in packless turbine pump shafts and it consists of the combinations, constructions and arrangements hereinafter described and claimed.

An object of my invention is to provide a packless turbine pump shaft which has novel means for preventing water from flowing up along the shaft to the motor or to the top of the well. This does away with the necessity of providing a packing for the shaft at the top of the well and results in an increase of power to the pump and also overcomes any water gaining access to the motor which drives the pump shaft.

A further object of my invention is to provide a device of the type described which is extremely simple in construction and which is durable and eliicient for the purpose intended.

Other objects and advantages will appear in the following specification, and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawing forming a part of this application, in which Figure 1 is a vertical section through the device, portions being shown in elevation; and

Figure 2 is a section along the line 22 of Figure 1.

In carrying out my invention I make use of a driven shaft 1 operatively connected to a motor not shown and extending downwardly through a well casing 2 to a pump runner 3. lVhen the shaft is rotated the pump runner 3 forces water upwardly from the well not shown through the casing 2 and out through a discharge pipe 4. This pipe may lead to a tank for storing the water or it may lead to an irrigation system.

It has been necessary to provide a packing around the shaft 1 at the point where it emer es from the pipe 4. In the present instance I do away with this packing and instead enclose the upper portion of the shaft 1 in a tubular member 5 that has an outlet passageway 6 extending in the direction of the flow of water through the discharge 1931. (se ate. 531,831.

pipe 4.- A valve 7 operated by a handle 8 may be actuated for opening or closing the outlet pipe 6. i

The water; in flowing through the discharge-pipe 4 entrains any water in the pipe 6 and causes it to flow out from the pipe and be carried away by the water in the discharge pipe 4. This creates a suction around the top of the shaft '1 which is sufiiv cient to carry any water surrounding the shaft out through the pipe 6. In fact this suction is suflicient that the pouring of any water around theshaft 1 adjacent to the top of the tubular member 5 will suck this water a down the shaft 1 and out through the pipe 6. In this way any need for a water'packing at the top of the shaft 1 is dispensed with.

In addition to the entraining featureialready described I'provide an inwardly extending spiral fin 9 that is carried by the lower portion 10 of the tubular member 5. The spiral fin is arranged in such a manner that, any water thrown into a spiral groove by the shaft 1 will be carried downwardly 7 toward the bottom-of the portion 10. A cup-shaped member 11 encloses the portion 10and is secured to the shaft -1 so as to revolve therewith. This cup-shaped member has an inwardly extending spiral fin 12 p which tends to convey any water from the 30 bottom of the cup'upwardly between the cup wall and portion 10 and to discharge this water into the pipe 4. The tendency of both fins 9 and 12 is to carry the water away from the shaft 1 and back into the '85 discharge pipe 4. These fins working in conjunction vwith the entraining feature'keep the top of the shaft 1 perfectly free from water and do away with the necessity of providing a water-tight packing.

Althoughl have shown and described one embodiment of my invention it is to be understoodthat the same is susceptibleof various changes and I reserve the right to employ such changes as may come-within the scope of the claims hereto annexed. I It will be noted from Figure 1 that the water pipe 6 has a branch pipe 13 extending therefrom and passing through the wall of the outlet pipe 4. A globe valve 14 controls the flow of water through the branch pipe 13. The pipe 13 is opened when the pump 3 is forcing water against a pressure. The water will flow through the branch pipe 13 when the device is pumping against pressure. When the pipe 13 is opened the butterflyvalve 7 is closed.

I claim: v

1. The combination with a motor driven shaft, a pump runner connected to the shaft, and a well casing for carryingwater, the shaft being received in the casing and passing through a portion thereof, of a packless bearing disposed on the shaft at the place Where the shaft passes through the portion of the casing, said casing carrying the water, having a water discharge outlet, a water outlet leading from the bearing and terminating in the casing discharge outlet, whereby water flowing through the casing outlet will entrain any water in the bearing outlet.

2. The combination with a motor driven shaft, a pump runner-connected to the shaft, and a well casing, the shaft being received in the casing and passing through a portion thereof of a packless bearing disposed on the shaft at the place where the shaft passes through the casing, said casing having a water discharge outlet, a water outlet leading from the bearing and terminating in the casing discharge outlet, whereby water flowing through the casing outlet will entrain any water in the bearing outlet, a spiral fin carried by the bearing, a cup carried by the shaft and enclosing a part of the bearing, said cup having a spiral fin, the fins on the bearing and cup cooperating for carrying water away from the bearing.

3. The combination with a vertically dis posed rotatable shaft, a water-conveying casing enclosing the shaft and having a discharge outlet, said shaftprojecting through the wall of the outlet, a packless bearing for the shaft at the place where it passes through the Wall, said bearing having a discharge pipe leading from the interior of the bearing and terminating in the discharge outlet, said pipe being disposed parallel with the flow of water through the discharge outlet, the water in passing the outlet end of the pipe entraining any Water within the pipe for creating a suction within the bearing.

4. The combination with a'vertically disposed rotatable shaft, a water-conveyingcasing enclosing the shaft and having a dis? charge outlet, said shaft projecting through the wall of the outlet, a packless bearing for the shaft at the place where it passes through the wall, said bearing having a discharge pipe leading from the interior of the bearing and terminating in the discharge outlet, said pipe being disposed parallel with the flow ofwater through the discharge 

